15-Letter Words Matching E____I_________

There are 16 15-letter words that match E____I_________. 4 are common words, such as EGREGIOUSNESSES and EMULSIFICATIONS. A rarer one is EXTERIORIZATION. In this set, N is the most frequent open letter (16 words). 3 words contain a doubled letter.

Full list 16

egregiousnessesemulsificationsexpeditiousnessexperimentationencomiasticallyexhibitionisticexperientialismexperimentalismexperimentalistexperimentalizeemancipationistenantiomorphismenantiomorphousequalitarianismesterificationsexteriorization

About this list

Words
16 (4 common words)
Common example
egregiousnesses
Rare example
exteriorization
Doubled letters
3
Ending in S
5
Most frequent letter
N (16)

Questions

How many 15-letter words matching e____i_________ are there?

16. 4 of them are common words.

What is a common example?

EGREGIOUSNESSES is among the common words in this set.